The mistery of the Dilda circuit.

oh lol, you're in Europe too, I said you because I forgot you weren't in USA.

Yours,
Albert

sure.. ill test it out with 6V and 7.2V and measure the current comin from it. ill try to get it done by tonight

edit: ok.. i took the readings. ive messed with the pot before but at 6V its 227mA and at 7.2V its 305mA

Thanks for your time, but what I wanted to know is if in your circuit the current draw from the battery equals the current at the diode

ooh.. my bad. ill retry

If for you is not a problem, can you please try also another thing ?

The voltage at the sides of the 6.2 ohm resistor, and from ground to the reference pin, in both the conditions, 3 and 3,7V batteries (or 6 and 7,2V, if you use a power supply) ..... for see if this can influence the loopback/reference part of the circuit ..... just trying to understand why it vary, and this can be one of the reasons.

Ofcourse, if for you is not a problem and don't cause you difficults ..... if you can do it, i marked the points on your image, for more easy operations (for the reference voltage, is more easy to measure it there, than from the IC pin).